Abstract
Stream Flow and Sediment Yield Modeling: A Case Study of Beles Watershed, Upper Blue Nile Basin
Highlights
Knowledge of landscape morphology along with the hydrologic processes is required to conceptualize the generation of runoff and sediment loss from precipitation events
The relevant time series data used for this study includes daily rainfall data, stream flows, suspended sediment yield, temperature, relative humidity, wind speed,solar radiation and Spatial data (DEM, soil map, land use map)
Stream flow modeling: The model was run for a period of eight years excluding the validation period, is taken for sensitivity analysis
Summary
Knowledge of landscape morphology along with the hydrologic processes is required to conceptualize the generation of runoff and sediment loss from precipitation events. The consequences of soil erosion and sediment deposition occur both on and off-site. Onsite effects are important on agricultural land where the redistribution of soil within a field, the loss of soil from a field, the breakdown of soil structure and the decline in organic matter and nutrients result in a reduction of cultivable soil depth and a decline in soil fertility. Water and environmental degradation due to localized and global climatic anomalies. These leave the country to recurrent crop failures and severe food shortages. Low soil fertility coupled with temporal imbalance in the distribution of rainfall and the substantial non-availability of the required water at the required period are the principal contributing factors to the low and declining agricultural productivity [2]
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